This bookcase reminds me of brass knuckles — is it just me? I'm pretty sure the designers didn't have that in mind as inspiration, though, judging from the fact that it's called the Cloud. And I guess I can see that in the design as well. The work of Ronan and Erwan Bouroullec for Italian design house Cappellini, these bookcases can be attached to one another with clips and placed both horizontally and vertically. For a little over $1,000, it's yours.